Compiler might be unable to place a refclk pin in a location that feeds the transceiver PLLs for Cyclone IV GX - Compiler might be unable to place a refclk pin in a location that feeds the transceiver PLLs for Cyclone IV GX Description For designs that target Cyclone IV GX devices, the Compiler might be unable to place a refclk pin in a location that feeds the transceiver PLLs Resolution Use location assignments to place the refclk pin and the PLL. Custom Fields values: ['novalue'] Troubleshooting novalue True ['PLL'] ['FPGA Dev Tools Quartus II Software'] 10.0 10.0 ['Cyclone® IV FPGAs'] ['novalue'] ['novalue'] ['novalue']